Insulation blowing machine



FIG. 1 is a front perspective view of an insulation blowing machine according to the design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a right side elevational view thereof.

The broken lines in the figure drawings represent unclaimed environment only and forms no part of the claimed design. 

CLAIM The ornamental design for an insulation blowing machine, as shown and described. 